#include<bits/stdc++.h>

using namespace std;


int main() {
    freopen("wechat.in", "w", stdout);
    srand(time(0));//1970-1-1 0:0:0
    cout << 100 << endl;
    for (int i = 0; i < 100; i++) {
        cout << rand() % 100 << " " << rand() % 100 << endl;
    }

    return 0;
}
